aid: achates-power
name: Achates Power
description: 'Achates Power is a San Diego, California engine technology company founded
  in 2004 by Dr. James Lemke and John Walton that develops opposed-piston, two-stroke
  compression-ignition engine architecture and licenses the resulting engine designs,
  development tools, simulation software and patents to engine manufacturers and OEMs.
  Its engines target passenger vehicles, medium and heavy-duty commercial trucks, military
  vehicles, and off-road and power-generation applications, and the company has claimed
  fuel-efficiency improvements of as much as 30 percent over conventional engines at
  comparable or better emissions. Achates Power has received U.S. Army TARDEC, Department
  of Energy and ARPA-E funding and partners with engine manufacturers such as Fairbanks
  Morse. It is a privately held hardware and engineering licensing business and publishes
  no public developer program, API, or machine-readable API artifacts.'
image: https://achatespower.com/wp-content/uploads/2019/10/AchatesPower_Logo_RBG.svg
url: https://raw.githubusercontent.com/api-evangelist/achates-power/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: stub
x-tier-reason: harvest
specificationVersion: '0.23'
created: '2026-08-06'
modified: '2026-08-06'
tags:
- Company
- Automotive
- Engines
- Manufacturing
- Clean Technology
- Transportation
- Defense
- Power Generation
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/achates-power-domain-security.yml
- type: Website
  url: https://achatespower.com/
- type: Blog
  url: https://achatespower.com/news-blog/
- type: BlogRSS
  url: https://achatespower.com/news-blog/feed/
- type: PrivacyPolicy
  url: https://achatespower.com/privacy-policy/
- type: TermsOfService
  url: https://achatespower.com/wp-content/uploads/2020/03/achates_power_terms_and_conditions.pdf
- type: Careers
  url: https://achatespower.com/careers/
- type: About
  url: https://achatespower.com/about-achates-power/
- type: SecondaryMarket
  url: https://forgeglobal.com/achates-power_stock/
x-enrichment:
  date: '2026-08-06'
  status: minimal
  artifacts_added: 1
  pass: local-v1
x-coverage:
  state: none
  reason: not-a-software-company
  detail: Achates Power licenses opposed-piston engine hardware designs and simulation
    tooling to OEMs under contract; its entire 26-page WordPress sitemap contains no
    developer, API or docs page, its only partner surface is a supplier-application
    contact form, and no api/developer/docs subdomain resolves in DNS.
  evidence:
  - url: https://achatespower.com/openapi.json
    status: 404
  - url: https://achatespower.com/.well-known/agent-card.json
    status: 404
  - url: https://achatespower.com/.well-known/security.txt
    status: 404
  - url: https://achatespower.com/llms.txt
    status: 404
  - url: https://achatespower.com/page-sitemap.xml
    status: 200
  - url: https://achatespower.com/supplier-portal/
    status: 200
  checked: '2026-08-06'